Audio Rights: Audio file copyright Jeff Rice and Montana State University; Use of this audio file is allowed in accordance with the Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 United States License; http://creativecommons.org/licenses/by-nc-nd/3.0/us/

Image Rights: By James St. John (Canary Spring (9 August 2011) 1) [CC BY 2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons